Citation: Ruike Hu, Kangmin Wang, Junxiang Liu, Jingxian Zhang, Guoliang Yang, Liqiu Wan, Bijin Li. Extended π-conjugated systems by external ligand-assisted C−H olefination of heterocycles: Facile access to single-molecular white-light-emitting and NIR fluorescence materials[J]. Chinese Chemical Letters, ;2025, 36(4): 110113. doi: 10.1016/j.cclet.2024.110113 shu

Extended π-conjugated systems by external ligand-assisted C−H olefination of heterocycles: Facile access to single-molecular white-light-emitting and NIR fluorescence materials

Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China

bijinli@cqu.edu.cn

Received Date: 15 April 2024
Revised Date: 27 May 2024
Accepted Date: 11 June 2024
Available Online: 13 June 2024

Figures(7)

The design and synthesis of a novel π-conjugated fluorescent framework by external ligand-assisted C−H olefination of heterocycles with excellent regioselectivity and broad substrate scope are reported herein. These novel fluorescent materials could present full-color-tunable emissions with large Stokes shifts. Furthermore, the protocol provides an opportunity to rapidly screen novel organic single-molecule white-light materials with high fluorescence quantum yields. The robust organic and low-cost white light-emitting diodes could rapidly be fabricated using the white-light-emitting material. Experimental data and theoretical calculations indicate that in the white-light dual emission the relatively short wavelength from high-lying singlet state emission and the relatively long wavelength from low-lying singlet state emission. The anti-Kasha dual-emission systems will provide a foundation for the development and application of organic single-molecule white light materials, effectively promoting the development and innovation of luminescent materials. In addition, this method demonstrated its potential application in the synthesis of new near-infrared (NIR) fluorescence materials with large Stokes shifts based on the olefination of heterocycles.
- π-Conjugated fluorescent framework,
- C−H olefination,
- Organic single-molecule white-light materials,
- Heterocycles,
- NIR fluorescence materials
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